From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 16133 invoked by alias); 5 Apr 2009 21:56:52 -0000 Received: (qmail 16111 invoked by uid 48); 5 Apr 2009 21:56:42 -0000 Date: Sun, 05 Apr 2009 21:56:00 -0000 Message-ID: <20090405215642.16110.qmail@sourceware.org> From: "fche at redhat dot com" To: systemtap@sources.redhat.com In-Reply-To: <20090330093705.10013.mjw@redhat.com> References: <20090330093705.10013.mjw@redhat.com> Reply-To: sourceware-bugzilla@sourceware.org Subject: [Bug runtime/10013] Support ENABLED sdt probe macro X-Bugzilla-Reason: AssignedTo Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org X-SW-Source: 2009-q2/txt/msg00129.txt.bz2 ------- Additional Comments From fche at redhat dot com 2009-04-05 21:56 ------- > Maybe we can teach uprobes to replace with a specific move/assignment > instruction instead of a trap instruction. This optimization is the same as in the "move immediate" kernel markers. However, it is not a *substitute* for a trap. It is only a substitute for a condition evaluation. > Then instead of with a normal STAP_PROBE replacing a "nop" with "int3", you > would replace the "mov $0x0, %somereg" with "mov $0x1, %somereg". You still need some way to enter the kernel. -- http://sourceware.org/bugzilla/show_bug.cgi?id=10013 ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee.